SolaX inverter

SolaX X3-ULT

The SolaX X3-ULT is an inverter with 6 models on the Clean Energy Council approved list as at 23 Sept 2026, with AC power from 15 kW to 30 kW.

Key specs

Phases: Three phase
Max efficiency (30K): 98.0%
European efficiency (30K): 97.7%
Battery voltage range: 120–800 V
Ingress protection: IP66

Copied from SolaX's own datasheet, checked 1 Oct 2026. Figures can differ between models in the range. Open the datasheet · SolaX product page

Questions to ask installers about the X3-ULT

Is it a hybrid (battery-ready) inverter, or solar only?
How much solar can it take, and how many separate panel inputs (MPPTs) does it have?
Is it single- or three-phase, and does that suit my home's supply?
Does it meet my network's export limit, and does it support dynamic export?
If I add a battery later, which batteries will it work with?
What's the warranty, and who handles claims in Australia?

Our inverter guide explains each of these, and hybrid inverters covers adding a battery.

Approved X3-ULT models

6 current models

Compare SolaX inverters

Model	AC power	Approved until
X3-ULT-15K	15 kW	25 June 2027
X3-ULT-15KP	15 kW	25 June 2027
X3-ULT-19.9K	20 kW	25 June 2027
X3-ULT-20K	20 kW	25 June 2027
X3-ULT-25K	25 kW	25 June 2027
X3-ULT-30K	30 kW	25 June 2027

Before you choose

Source: Clean Energy Council approved products lists, data as at 23 Sept 2026. Approval means a product meets the standards needed to be installed with government small-scale technology certificates (STCs). It isn't a recommendation, and Energy Quotes doesn't rank products. Check the manufacturer's datasheet and ask your installer before you buy.

Energy Quotes isn't affiliated with SolaX. Listing a product doesn't mean participating installers sell it. Mention it in the quote form and installers will tell you whether they can supply it.

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